Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
111 views
in Mathematics by (64.1k points)
closed by
Find the value of other five trigonometric function `tanx=-5/(12)`, x lies in second quadrant.

1 Answer

0 votes
by (61.1k points)
selected by
 
Best answer
Given, that `tanx=-5/12`, and x lies in second quadrant.
`therefore tanx=-5/12 rArr cotx=1/(tanx)`
`rArr cotx=1/(-5/12) = 1 xx -12/5 = -12/5`
`(therefore` x lies in second quadrant, therefore, sin and "cosec" ratio willl be positive and the remaining ratio tan, cot and sec will be negative.) then `sec^(2)x=-13/12`
`therefore cos=1/(secx)`
`rArr cosx=1/(-13/12) = 1 xx (-12/13)`
`rArr cosx=-12/13`
`therefore "cosec"^(2)x=cot^(2)x`
`therefore "cosec"^(2)x=1+(-12/5)^(2)= 1+144/25=169/25=(13/5)^(2)`
`rArr "cosec"x=13/5`
`therefore sinx=1/("cosec"x) rArr sinx=1/(13/5) = 1 xx 5/13`
`therefore sinx=5/13`
Therefore, `sinx=5/13`, `"cosec"x=13/5, cosx=-12/13`
`cotx=-12/5, secx=-13/12`. Ans.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...